Patent US2780765A successfully refreshed from Google Patents.
US2780765A
Expired / Lapsed
US
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Solar energy converting apparatus
Assignee: AT&T Inc
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Filing: 1954-03-05
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Granted: 1957-02-05
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Expires: 1974-03-05
Abstract
No abstract record available.
Inventors
- 👤 Daryl M Chapin
- 👤 Calvin S Fuller
- 👤 Gerald L Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:21
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/34; H02J7/35; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0213; H01M; H01M10/00; H01M10/42; H01M10/44; H01M10/46; H01M10/465; H10; H10F; H10F10/00; H10F10/10; H10F10/14; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10F77/30; H10F77/306; H10F77/311; H10F77/315; H10F99/00; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/547; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S136/00; Y10S136/291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN ARRANGEMENT FOR UTILIZING SOLAR RADIATION FOR KEEPING CHARGED A STORAGE BATTERY COMPRISING A STORAGE BATTERY TO BE CHARGED, AT LEAST ONE PHOTOSENSITIVE ELEMENT COMPRISING A SILICON BODY INCLUDING AN N-TYPE ZONE CONTIGUOUS WITH A P-TYPE ZONE INCLUDING A CONCENTRATION OF BORON IMPURITIES, THE THICKNESS OF THE P-TYPE ZONE BEING OF THE ORDER OF THE DIFFUSION LENGTH OF ELECTRONS THEREIN, AND A UNILATERALLY-CONDUCTIVE ELEMENT SERIALLY CONNECTED WITH SAID STORAGE BATTERY AND PHOTOSENSITIVE ELEMENT, AND POLED TO PASS CHARGING CURRENTS DEVELOPED BY THE PHOTOSENSITIVE ELEMENT AND TO BLOCK DISCHARGING CURRENTS FROM THE BATTERY THROUGH THE PHOTOSENSITIVE ELEMENT.
Claim 2
Dependent Claim
96 words
AN ARRANGEMENT FOR UTILIZING SOLAR RADIATION FOR KEEPING CHARGED A STORAGE BATTERY COMPRISING A STORAGE BATTERY TO BE CHARGED, AT LEAST ONE PHOTOSENSITIVE ELEMENT COMPRISING A SILICON BODY INCLUDING AN N-TYPE ZONE CONTIGUOUS WITH A P-TYPE ZONE INCLUDING A CONCENTRATION OF BORON IMPURITIES, THE THICKNESS OF THE P-TYPE ZONE BEING OF THE ORDER OF THE DIFFUSION LENGTH OF ELECTRONS THEREIN, AND A UNILATERALLY-CONDUCTIVE ELEMENT SERIALLY CONNECTED WITH SAID STORAGE BATTERY AND PHOTOSENSITIVE ELEMENT, AND POLED TO PASS CHARGING CURRENTS DEVELOPED BY THE PHOTOSENSITIVE ELEMENT AND TO BLOCK DISCHARGING CURRENTS FROM THE BATTERY THROUGH THE PHOTOSENSITIVE ELEMENT.
References Cited (Backward Citations)
US2631356A
Cited
US2402582A
Cited
US2402662A
Cited
US2443542A
Cited
US2423125A
Cited
US2544211A
Cited
US2589704A
Cited
US2606313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |